如何复制和;在XML中粘贴文本节点

时间：2013-10-10 05:18:40

标签： xml

我有一个XML文件，我想从一个位置复制文本节点并将其粘贴到不同位置的文本节点。

下面是我想要进行操作的XML文件：

<?xml version="1.0" encoding="UTF-8"?>
<Main>
    <installObj uniqueObjects="2822">
        <object class="Installer" ">
            <visualChildren>
                <object class="InstallSet">
                    <installchildrenMain>
                        <object class="InstallBundle1">
                            <property name="ruleExpression">
                                <string><!***[CDATA[I Need a VALUE!]]***>
                                </string>
                            </property>
                            <property name="bundleName">
                                <string><![CDATA[Australia]]></string>
                            </property>
                            <rules logicalOperation="AND">
                                <object class="CompareVariable">
                                    **
                                    <property name="ruleId">
                                        <string><!***[CDATA[CIAV819]]***>
                                        </string>
                                    </property>
                                    **
                                </object>
                            </rules>
                            <installChildren>
                                <object class="InstallComponent1">
                                    <property name="ruleExpression">
                                        <string><!***[CDATA[CIAV962***]]>
                                        </string>
                                    </property>
                                    <property name="componentName">
                                        <string><![CDATA[AUST]]></string>
                                    </property>
                                    <rules logicalOperation="AND">
                                        <object class="CompareVariable">
                                            <property name="ruleId">
                                                <string><!***[CDATA[CIAV962]***]>
                                                </string>
                                            </property>
                                        </object>
                                    </rules>
                                    <installChildren>
                                        <object class="InstallDirCont">
                                            <property name="ruleExpression">
                                                <string><![***CDATA[CIAV100 || CIAV503]***]>
                                                </string>
                                            </property>
                                            <rules logicalOperation="OR">
                                                <object class="CompareVariable1">
                                                    <property name="ruleId">
                                                        <string><***![CDATA[CIAV100]***]></string>
                                                    </property>
                                                </object>
                                                <object class="CompareVariable2">
                                                    <property name="ruleId">
                                                        <string><***![CDATA[CIAV503]***]></string>
                                                    </property>
                                                </object>
                                            </rules>
                                        </object>
                                    </installChildren>
                                </object>
                                #end of installComponent1
                                <object class="InstallComponent2">
                                    ======
                                    Same as above (Install Component1)
                                    =====
                                </object>
                                #end of installComponent2
                            </installchildren>
                        </object>
                        #installBundle1
                        <object class="InstallBundle2">
                            ====
                            Same structure as InstallBundle1
                            ====
                        </object>
                        #installBundle2
                    </installchildrenMain>
                </object>
                # End of InstallSet
            </visualChildren>
            # end of visualchildren
        </object>
        # end of Installer
    </installObj>
    <restorationObjects count="0" />
</Main>

现在我想做的是：

  1. 从Object类复制“CIAV819”文本节点值InstallBundle1 - 对象类CompareVariable并将其粘贴到对象类InstallBundle1的文本节点上，就在InstallChildrenMain之前

  2. 从Object类复制“CIAV962”文本节点值InstallComponent1 - 对象类CompareVariable并在InstallChildren

    之前将其粘贴到对象类InstallComponent1的文本节点

  3. 从Object类InstallDirCont复制“CIAV100”文本节点值 - 对象类CompareVariable1并添加操作数“||”并从Object类InstallDirCont复制“CIAV503”文本节点值 - 对象类CompareVariable2并在InstallChildren之前将其粘贴到对象类InstallDirCont的文本节点。

    4. 我知道这看起来有点整洁，但我需要这个修复。我是xml和PHP的新手 非常感谢您的帮助。

    以下是我在这里用来操作这个xml文件的PHP代码：

    <?php

$xmldoc = new DOMDocument();
$xmldoc ->load('HR92_latest.iap_xml');


#$x = $xmldoc->getElementsByTagName('/InstallAnywhere_Deployment_Project/installationObjects[1]/object[1]/visualChildren[1]/object[1]/installChildren[1]/object[1]/rules[1]/object[1]/property[8]');
$x = $xmldoc->getElementsByTagName('//property[@name]');


var_dump ($x);
foreach ($x as $string) {
    echo $string->nodeValue, PHP_EOL;
    }
?>

    但是这段代码正在返回o / p：

    object（DOMNodeList）＃2（1）{   [ “长度”] =＆GT;   INT（0） }

    基本上我在这里尝试首先找到xpath，然后找到文本节点的值，但它失败了。 任何帮助将不胜感激。谢谢！

    2013年10月17日 - 更新了问题

    @hielsnoppe：我发现使用DOMDocument的限制。因此我想到了使用你的xslt代码。它几乎可以工作，但在命令提示符下运行时，它显示如下所示的输出：

    <object class="InstallComponent1" objectID="03fe9">
            <property><string>CIAV4</string></property>
                <property name="componentName">
                        <string>BA, NT db2</string>
                </property>
                <rules logicalOperation="AND">
                        <object class="CompareVariable" objectID="0304">
                        <property name="ruleId">
                                        <string>CIAV4</string>
                                </property>
                        </object>
                </rules>
                <installChildren>
                        <object class="InstallDirCont" objectID="03005">
                            <property><string>CIAV50 || CIAV60</string></property>
                                <rules logicalOperation="OR">
                                        <object class="CompareVariable">
                                            <property name="ruleId">
                                                <string>CIAV50</string>
                                            </property>
                                        </object>
                                        <object class="CompareVariable">
                                            <property name="ruleId">
                                                <string>CIAV60</string>
                                            </property>
                                        </object>
                                </rules>
                    </object>
                </installChildren>

    我的意思是输出显示为：

    <object class="InstallComponent1" objectID="03fe9">
                <property><string>CIAV962</string></property>

    而不是

    <object class="InstallComponent1" objectID="03fe9">
                <property name="ruleExpression"><string><![CDATA[CIAV962]]</string></property>

    当我打开xml文件时，它仍然显示规则表达式字段为空白!!

    请帮助我非常接近解决方案:)谢谢!!

    2013年10月18日 - 更新

    我是否必须添加nodeType == XML_CDATA_SECTION_NODE？在模板匹配规则表达式？

1 个答案:

答案 0 :(得分：1)

在下面我假设输入文件看起来像这样但没有评论。在所有解决方案中，您可能必须根据需要调整XPath选择器。

<?xml version="1.0" encoding="UTF-8"?>
<Main>
    <installObj uniqueObjects="2822">
        <object class="Installer">
            <visualChildren>
                <object class="InstallSet">
                    <installchildrenMain>
                        <object class="InstallBundle1">
                            <property name="ruleExpression">
                                <string /><!-- PASTE1 -->
                            </property>
                            <property name="bundleName">
                                <string><![CDATA[Australia]]></string>
                            </property>
                            <rules logicalOperation="AND">
                                <object class="CompareVariable">
                                    <property name="ruleId">
                                        <string><![CDATA[CIAV819]]></string><!-- COPY1 -->
                                    </property>
                                </object>
                            </rules>
                            <installChildren>
                                <object class="InstallComponent1">
                                    <property name="ruleExpression">
                                        <string /><!-- PASTE2 -->
                                    </property>    
                                    <property name="componentName">
                                        <string><![CDATA[AUST]]></string>
                                    </property>
                                    <rules logicalOperation="AND">
                                        <object class="CompareVariable">
                                            <property name="ruleId">
                                                <string><![CDATA[CIAV962]]></string><!-- COPY2 -->
                                            </property>
                                        </object>
                                    </rules>
                                    <installChildren>
                                        <object class="InstallDirCont">
                                            <property name="ruleExpression">
                                                <string /><!-- PASTE3 -->
                                            </property>
                                            <rules logicalOperation="OR">
                                                <object class="CompareVariable1">
                                                    <property name="ruleId">
                                                        <string><![CDATA[CIAV100]]></string><!-- COPY3.1 -->
                                                    </property>
                                                </object>
                                                <object class="CompareVariable2">
                                                    <property name="ruleId">
                                                        <string><![CDATA[CIAV503]]></string><!-- COPY3.2 -->
                                                    </property>
                                                </object>
                                            </rules>
                                        </object>
                                    </installChildren>
                                </object><!-- end of installComponent1 -->
                                <object class="InstallComponent2" >
                                    <!--
                                    Same as above (Install Component1)
                                    -->
                                </object><!-- end of installComponent2 -->
                            </installChildren>   
                        </object><!-- end of installBundle1 -->
                        <object class="InstallBundle2" >
                            <!--
                            Same structure as InstallBundle1
                            -->
                        </object><!-- end of installBundle2 -->
                    </installchildrenMain>
                </object><!-- end of InstallSet -->
            </visualChildren><!-- end of visualChildren -->
        </object><!-- end of Installer -->
    </installObj>
    <restorationObjects count="0"/>
</Main>

如果逻辑必须在PHP中完成，请尝试使用DOMXPath而不是getElementsByTagName()来遍历相应的PASTE位置，并从相应的COPY位置提取数据。我不会详细说明这一点，因为我更喜欢下面的XSLT解决方案。

<?php

$xmldoc = new DOMDocument();
$xmldoc->load('HR92_latest.iap_xml');

$xpath = new DOMXPath($xmldoc);
$paste1 = $xpath->query('//object[starts-with(@class, 'InstallBundle')]/property[@name='ruleExpression']');
$paste2 = $xpath->query('//installChildren/object[starts-with(@class, 'InstallComponent')]/property[@name='ruleExpression']');
$paste3 = $xpath->query('//installChildren/object/installChildren/object[@class='InstallDirCont']/property[@name='ruleExpression']');

foreach ($paste1 as $p) {
    // find corresponding COPY location and pull in the data
}
foreach ($paste2 as $p) {
    // find corresponding COPY location and pull in the data
}
foreach ($paste3 as $p) {
    // find corresponding COPY locations and pull in the data
}

使用XSLT我建议将保存为pick_a_meaningful_name.xslt的以下转换应用于上述示例形式的XML文档，以生成所需结果。

<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output cdata-section-elements="string" />
<xsl:template match="@*|node()">
    <xsl:copy><xsl:apply-templates select="@*|node()" /></xsl:copy>
</xsl:template>
<xsl:template match="//object[starts-with(@class, 'InstallBundle')]/property[@name='ruleExpression']">
    <xsl:copy>
        <xsl:copy-of select="../rules/object/property/string" />
    </xsl:copy>
</xsl:template>
<xsl:template match="//installChildren/object[starts-with(@class, 'InstallComponent')]/property[@name='ruleExpression']">
    <xsl:copy>
        <xsl:copy-of select="../rules/object/property/string" />
    </xsl:copy>
</xsl:template>
<xsl:template match="//installChildren/object/installChildren/object[@class='InstallDirCont']/property[@name='ruleExpression']">
    <xsl:copy>
        <string>
            <xsl:for-each select="../rules[@logicalOperation='OR']/object">
                <xsl:value-of select="./property/string" />
                <xsl:if test="position() &lt; count(../object)"><xsl:value-of select="' || '" /></xsl:if>
            </xsl:for-each>
        </string>
    </xsl:copy>
</xsl:template>
</xsl:transform>

执行此操作的PHP代码的最小示例可能使用XSLTProcessor，如下所示：

<?php

$xmldoc = new DOMDocument();
$xmldoc->load('HR92_latest.iap_xml');
$xsldoc = new DOMDocument();
$xsldoc->load('pick_a_meaningful_name.xslt');

$xslt = new XSLTProcessor();
$xslt->importStylesheet($xsldoc);
$result = $xslt->transformToDoc($xmldoc);

$result->save('HR92_latest.iap_xml');   // writes result to original file
echo $result->saveXML();                // echoes result
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